Problem With The Rear Window Defroster - Mercedes-Benz E-Class Coupe Operator's Manual

Problems with the rear window defroster
Problem
The rear window
defroster has deactiva-
ted prematurely or can-
not be activated.
Switching air-recirculation mode
on/off
General notes
You can deactivate the flow of fresh air if
unpleasant odors are entering the vehicle from
outside. The air already inside the vehicle will
then be recirculated.
If you switch on air-recirculation mode, the win-
dows can fog up more quickly, in particular at
low temperatures. Only use air-recirculation
mode briefly to prevent the windows from fog-
ging up.
Activating or deactivating
Turn the SmartKey to position 2 in the ignition
X
lock ( page 122).
Y
To activate: press the g button.
X
The indicator lamp above the g button
lights up.
To deactivate: press the g button.
X
The indicator lamp above the g button
goes out.
i
Air-recirculation mode deactivates auto-
matically:
after approximately five minutes at outside
R
temperatures below approximately 41 ‡
(5 †)
after approximately five minutes if cooling
R
with air dehumidification is deactivated
after approximately 30 minutes at outside
R
temperatures above approximately 41 ‡
(5 †) if the "Cooling with air dehumidifica-
tion" function is activated
Operating the climate control systems
Possible causes/consequences and M Solutions
The battery has not been sufficiently charged.
Switch off any consumers that are not required, e.g. reading lamps,
X
interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window defroster
can be activated again.
Switching the residual heat on or off
General notes
It is possible to make use of the residual heat of
the engine to continue heating the vehicle for
approximately 30 minutes after the engine has
been switched off. The heating time depends on
the set interior temperature.
The "residual heat" function only functions opti-
mally with the side windows and panorama roof
with power tilt/sliding panel closed.
Activating/deactivating
Turn the SmartKey to position 0 in the ignition
X
lock or remove it (
Y
To activate: press the Ì button.
X
The indicator lamp above the Ì button
lights up.
i
If the residual heat function is activated, the
windows may fog up on the inside.
i
The blower will run at a low speed regardless
of the airflow setting.
i
If you activate the residual heat function at
high temperatures, only the ventilation will be
activated. The blower runs at medium speed.
To deactivate: press the Ì button.
X
The indicator lamp above the Ì button
goes out.
Residual heat is deactivated automatically:
after approximately 30 minutes
R
when the ignition is switched on
R
if the battery voltage drops
R
page 122).
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